Optical element driving mechanism

ABSTRACT

An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, a first driving assembly, and a positioning element. The movable portion is movably disposed on the fixed portion and comprises an optical element, wherein the optical element moves in the first direction. The first driving assembly is at least partially disposed on the fixed portion. The positioning element is rotatably disposed on the fixed portion or the movable portion, wherein when the first driving assembly is not activated, the positioning element is used to limit the position of the movable portion relative to the fixed portion to a limit position.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional Application No.62/899,423, filed on Sep. 12, 2019 and China Patent Application No.202020150608.3, filed on Feb. 3, 2020, which are incorporated byreference herein in their entirety.

BACKGROUND OF THE DISCLOSURE Field of the Disclosure

The present disclosure relates to an optical element driving mechanism.

Description of the Related Art

As technology has developed, it has become more common to includeimage-capturing and video-recording functions into many types of modernelectronic devices, such as smartphones and digital cameras. Theseelectronic devices are used more and more often, and new models havebeen developed that are convenient, thin, and lightweight, offering morechoices for consumers.

BRIEF SUMMARY OF DISCLOSURE

An optical element driving mechanism is provided. The optical elementdriving mechanism includes a fixed portion, a movable portion, a firstdriving assembly, and a positioning element. The movable portion ismovably disposed on the fixed portion and includes an optical element,wherein the optical element moves in a first direction. The firstdriving assembly is at least partially disposed on the fixed portion.The positioning element is rotatably disposed on the fixed portion orthe movable portion, wherein when the first driving assembly is notactivated, the positioning element is used to limit the position of themovable portion relative to the fixed portion to a limit position.

In some embodiments, the optical element driving mechanism furtherincludes a second driving assembly separated from the first drivingassembly for a distance. In some embodiments, the first drivingassembly, the second driving assembly, and the positioning element arearranged in the first direction. In some embodiments, the first drivingassembly includes a first magnetic element and a second magnetic elementarranged in a second direction that is perpendicular to the firstdirection.

In some embodiments, the fixed portion includes a case and a base, thebase is disposed on the base, and the case includes a connecting portionin direct contact with the base. In some embodiments, the connectingportion is positioned between the first driving assembly and thepositioning element when viewed in a third direction that isperpendicular to the first direction. In some embodiments, the opticalelement driving mechanism further includes a second driving assembly,wherein the second driving assembly and the connecting portion at leastpartially overlap when viewed in the third direction.

In some embodiments, the positioning element includes a main body and astopping portion extending from the main body. In some embodiments, theoptical element driving mechanism further includes a limiting elementdisposed between the positioning element and the fixed portion. In someembodiments, the fixed portion includes a case and a base, the case isdisposed on the base, and the limiting element is disposed between thecase and the positioning element. In some embodiments, the opticalelement driving mechanism further includes an electronic elementdisposed on the fixed portion, and the first driving assembly isdisposed between the electronic element and the positioning element.

In some embodiments, the fixed portion has an opening for accommodatingan optical module. In some embodiments, the opening at least partiallyoverlaps the optical module in the second direction. In someembodiments, the optical element driving mechanism further includes acircuit electrically connected to the first driving assembly, whereinthe fixed portion has a recess, and the circuit is disposed in therecess. In some embodiments, the first driving assembly is positionedbetween the recess and the positioning element.

In some embodiments, the optical element driving mechanism furtherincludes a holder affixed to the optical element and disposed betweenthe optical element and the first driving assembly. In some embodiments,the first driving assembly includes a first magnetic element, the holderhas a recess, and the first magnetic element is disposed in the recess.In some embodiments, the holder has an opening, and the first magneticelement is exposed from the opening when viewed in the second direction.In some embodiments, the positioning element further includes a mainbody and two limiting portions extending from the main body in the firstdirection. The two limiting portions pass through the optical element.In some embodiments, the optical element has a passage, each of thelimiting portions has a column-like shape, and the width of the passageis greater than the diameter of each of the limiting portions.

BRIEF DESCRIPTION OF DRAWINGS

Aspects of the present disclosure are best understood from the followingdetailed description when read with the accompanying figures. It shouldbe noted that, in accordance with the standard practice in the industry,various features are not drawn to scale. In fact, the dimensions of thevarious features may be arbitrarily increased or reduced for clarity ofdiscussion.

FIG. 1 is a schematic view of an optical element driving mechanismaccording to some embodiments of the present disclosure.

FIG. 2 is an exploded view of the optical element driving mechanism.

FIG. 3 is a side view of the optical element driving mechanism.

FIG. 4 is a schematic view of the case.

FIG. 5 and FIG. 6 are schematic views of the base when viewed indifferent directions.

FIG. 7 is a top view of the optical element.

FIG. 8 is a schematic view of the positioning element.

FIG. 9 is a schematic view of the holder.

FIG. 10 and FIG. 11 are schematic views of the positioning elementduring operation.

FIG. 12 and FIG. 13 are block diagrams of methods for operating theoptical element driving mechanism.

FIG. 14 to FIG. 19 are schematic views of the optical element drivingmechanism during operation.

DETAILED DESCRIPTION OF DISCLOSURE

The following disclosure provides many different embodiments, orexamples, for implementing different features of the provided subjectmatter. Specific examples of components and arrangements are describedbelow to simplify the present disclosure. These are, of course, merelyexamples and are not intended to be limiting. For example, the formationof a first feature over or on a second feature in the description thatfollows may include embodiments in which the first and second featuresare in direct contact, and may also include embodiments in whichadditional features may be disposed between the first and secondfeatures, such that the first and second features may not be in directcontact.

In addition, the present disclosure may repeat reference numerals and/orletters in the various examples. This repetition is for the purpose ofsimplicity and clarity and does not in itself dictate a relationshipbetween the various embodiments and/or configurations discussed.Moreover, the formation of a feature on, connected to, and/or coupled toanother feature in the present disclosure that follows may includeembodiments in which the features are in direct contact, and may alsoinclude embodiments in which additional features may be disposedinterposing the features, such that the features may not be in directcontact. In addition, spatially relative terms, for example, “vertical,”“above,” “over,” “below,” “bottom,” etc. as well as derivatives thereof(e.g., “downwardly,” “upwardly,” etc.) are used in the presentdisclosure for ease of description of one feature's relationship toanother feature. The spatially relative terms are intended to coverdifferent orientations of the device, including the features.

Unless defined otherwise, all technical and scientific terms used hereinhave the same meaning as commonly understood by one of ordinary skill inthe art to which this disclosure belongs. It should be appreciated thateach term, which is defined in a commonly used dictionary, should beinterpreted as having a meaning conforming to the relative skills andthe background or the context of the present disclosure, and should notbe interpreted in an idealized or overly formal manner unless definedotherwise.

Use of ordinal terms such as “first”, “second”, etc., in the claims tomodify a claim element does not by itself connote any priority,precedence, or order of one claim element over another or the temporalorder in which acts of a method are performed, but are used merely aslabels to distinguish one claim element having a certain name fromanother element having the same name (but for use of the ordinal term)to distinguish the claim elements.

In addition, in some embodiments of the present disclosure, termsconcerning attachments, coupling and the like, such as “connected” and“interconnected”, refer to a relationship wherein structures are securedor attached to one another either directly or indirectly throughintervening structures, as well as both movable or rigid attachments orrelationships, unless expressly described otherwise.

Refer to FIG. 1 to FIG. 3. FIG. 1 is a schematic view of an opticalelement driving mechanism 5-1 according to some embodiments of thepresent disclosure, FIG. 2 is an exploded view of the optical elementdriving mechanism 5-2, and FIG. 3 is a side view of the optical elementdriving mechanism 5-1. The optical element driving mechanism 5-1 mainlyincludes case 5-100, a base 5-200, an optical element 5-300, a firstdriving assembly 5-400 (which includes a first magnetic element 5-410, asecond magnetic element 5-420, and a third magnetic element 5-430), asecond driving assembly 5-500 (which includes a fourth magnetic element5-520 and a fifth magnetic element 5-530), a positioning element 5-510,a holder 5-600, and a limiting element 5-700. An optical module 5-800may be disposed in the optical element driving mechanism 5-1. Theoptical module 5-800 may be a voice coil motor (VCM) having an opticalunit (such as a lens, a mirror, a prism, a beam splitter, or anaperture), or it may be the optical unit itself.

In some embodiments, the case 5-100 and the base 5-200 may be combinedas an outer case of the optical element driving mechanism 5-1.Furthermore, the case 5-100 and the base 5-200 may be referred to as afixed portion 5-F.

The optical element 5-300 may be moved in the X direction (the firstdirection) to act as a shutter of the optical module 5-800 or to blockthe optical module 5-800 when not using the optical module 5-800 (to bedescribed later) to increase security. In some embodiments, the opticalelement 5-300 may be referred to as a movable portion 5-M and is movablydisposed on the fixed portion 5-F.

FIG. 4 is a schematic view of the case 5-100. The case 5-100 may includean optical opening 5-112, a pair of connecting openings 5-114, a passage5-116, connecting portions 5-120 positioned on short sides of the case5-100, connecting portions 5-122 positioned on long sides of the case5-100, a positioning opening 5-130, and a positioning recess 5-132.

As shown in FIG. 1 and FIG. 4, the optical opening 5-112 allows theoptical module 5-800 to be exposed, so that the optical module 5-800 maycapture images from outside. The connecting opening 5-114 may allow thelimiting portions 5-514 and 5-516 of the positioning element 5-510 torotate, and the passage 5-116 allows the positioning element 5-610 ofthe holder 5-600 to move in the passage 5-116 (to be described later).

FIG. 5 and FIG. 6 are schematic views of the base 5-200 when viewed indifferent directions. The base 5-200 may include a recess 5-201 and aconcave portion 5-203 positioned at one side of the base 5-200, anopening 5-202 in the concave portion 5-203, a recess at the side of theconcave portion 5-203, and recesses 5-205, 5-206, 5-207, and 5-208positioned at another side of the base 5-200, a protruding portion 5-209positioned at a side of the base 5-200, concave portions 5-212positioned at opposite sides of two short sides of the base 5-200,protruding portions 5-213 in the concave portions 5-212, concaveportions 5-214 positioned at long sides of the base 5-200, a column5-220 in the recess 5-207, contact portions 5-230 on opposite sides ofthe recess 5-205, a first positioning portion, and a second positioningportion 5-242.

As shown in FIG. 1, the first positioning portion 5-240 and the secondpositioning portion 5-242 of the base 5-200 may be positioned in thepositioning opening 5-130 and the positioning recess 5-132 of the case5-100, respectively, to define the position of the case 5-100 relativeto the base 5-200. The elements (such as the case 5-100 or the base5-200) may have a manufacturing tolerance, and the positioning recess5-132 may allow the elements to be assembled to each other even iftolerance occurs in these elements.

In some embodiments, the optical module 50800 may be disposed at theopening 5-202 and the concave portion 5-203 of the base 5-200, and thelight incident side of the optical module 5-800 may be exposed from theopening 5-202. In other words, as shown in FIG. 1, the opening 5-20 andthe optical module 5-800 at least partially overlap each other whenviewed in the Z direction (the second direction) to allow light to passthrough the opening 5-202 to reach the optical module 5-800. In someembodiments, the optical module 5-800 may be affixed to the base 5-200with glue, and the recess 5-204 may store excess glue to prevent theglue from coming onto contact with other elements.

In some embodiments, an electronic element (not shown) may be disposedin the recess 5-201 of the base 5-200, such as a chip, and the firstdriving assembly 5-400 may be positioned between the electronic elementand the positioning element 5-510. The electronic element may controlthe operation of the optical element driving mechanism 5-1. Furthermore,a circuit (not shown) may be disposed in the recess 5-208 andelectrically connected to the first driving assembly 5-400 to provideelectrical signal to the driving assembly 5-400. The first drivingassembly 5-400 is positioned between the recess 5-208 and thepositioning element 5-510.

The connecting portion 5-120 of the case 5-100 may be positioned in theconcave portion 5-212 of the base 5-200 at the short sides of theoptical element driving mechanism 5-1, and the protruding portion 5-213may be exposed from the connecting portion 5-120. As a result, the case5-100 and the base 5-200 may be engaged with each other. Furthermore,the connecting portion 5-122 of the case 5-100 may be positioned in theconcave portion 5-214 of the base 5-200 at the long sides of the opticalelement driving mechanism 5-1, to allow the connecting portion 5-122 tobe in direct contact with the base 5-200, which further defines theposition of the case 5-100 and the base 5-200. Moreover, as shown inFIG. 3, the connecting portion 5-122 may be positioned between the firstdriving assembly 5-400 and the positioning element 5-510, and the seconddriving assembly 5-500 and the connecting portion 5-122 may be at leastpartially overlap each other when viewed in a third direction (Ydirection) to achieve miniaturization.

FIG. 7 is a top view of the optical element 5-300. In some embodiments,the optical element 5-300 may be plate-shaped. An opening 5-310 may beformed on the optical element 5-300, the opening 5-310 has notches5-312, 5-314, 5-316, 5-318 and a passage connecting the notches 5-312,5-314, 5-316, 5-318. Moreover, the optical element 5-300 has openings5-322 and 5-324. Stopping portions 5-300 are formed at sides of theoptical element 5-300. In some embodiments, the width of the passage5-311 is 5-W in the Y direction.

FIG. 8 is a schematic view of the positioning element 5-510. Thepositioning element 5-510 may include a column-like shaped main body5-511. The main body 5-511 has a hole 5-512 running through the mainbody 5-511, and limiting portions 5-514 and 5-516 extending in the Zdirection (second direction). Furthermore, a stopping portion 5-518 maybe formed at the side of the main body 5-511 and extending from the mainbody 5-511 in the X direction (the first direction). In someembodiments, the limiting portions 5-514 and 5-516 may be column-likeshaped, and the diameters of the limiting portions 5-514 and 5-516 maybe 5-D1 and 5-D2, respectively. In some embodiments, diameter 5-D1 maybe substantially identical to diameter 5-D2.

FIG. 9 is a schematic view of the holder 5-600. The holder 5-600 mayinclude a main body 5-605, two positioning elements 5-610 on one side ofthe main body 5-605, a recess 5-620 on another side of the main body5-605, and an opening 5-622 on the main body 5-605. Furthermore, in someembodiments, a plurality of contact portions 5-630 may be formed on theside of the main body 5-605, wherein the sides of the contact portions5-630 may be arc-shaped to reduce friction between the contact portions5-630 and other elements (such as the base 5-200).

FIG. 10 and FIG. 11 are schematic views of the positioning element 5-510during operation. The second magnetic element 5-420 and the thirdmagnetic element 5-430 may be disposed in the recess 5-205 of the base5-200 (FIG. 5), the fourth element 5-520 and the fifth magnetic element5-530 may be disposed in the recess 5-206 of the base 5-200, and thepositioning element 5-510 may be disposed in the recess 5-207 of thebase 5-200. Furthermore, the third magnetic element 5-430 may bedisposed in the second magnetic element 5-420 and partially exposed fromthe second magnetic element 5-420, and the fifth magnetic element 5-530may be disposed in the fourth magnetic element 5-520 and partiallyexposed from the fourth magnetic element 5-520.

As shown in FIG. 10 and FIG. 11, the positioning element 5-510 mayrotate in the recess 5-207 using the column 5-220 that passes throughthe hole 5-512 as a rotational axis, until the stopping portion 5-518comes into contact with the side 5-207A of the recess 5-207. It shouldbe noted that the limiting portions 5-514 and 5-516 are not arranged inthe X direction in FIG. 10, and the limiting portions 5-514 and 5-516are substantially arranged in the X direction in FIG. 11.

It should be noted that the positioning element 5-510 may be a magnet,and the magnetic pole directions may be shown in FIG. 10 and FIG. 11. Insome embodiments, the magnetic pole directions of the positioningelement 5-510 may be exchanged, and is not limited thereto. In someembodiments, the fourth magnetic element 5-520 may be a coil, and thefifth magnetic element 5-530 may be magnetic permeable material disposedin the coil. In other words, the fourth magnetic element 5-520 and thefifth magnetic element 5-530 may act as an electromagnet. When currentwith different directions is pass to the fourth magnetic element 5-520,the fourth magnetic element 5-520 will interact with the magnetic fieldof the positioning element 5-510 to generate an electromagnetic force torotate the positioning element 5-510 in different directions forcontrolling the position of the positioning element 5-510. Furthermore,the second driving assembly 5-500 and the first driving assembly 5-400may be separated for a distance to prevent magnetic interference fromoccurring.

In some embodiments, the first driving assembly 5-400, the seconddriving assembly 5-500 and the positioning element 5-510 are arranged inthe first direction (the X direction) to reduce the size on otherdirections and to control the direction of magnetic force. Furthermore,the limiting element 5-700 (FIG. 2) may be used to limit the movablerange of the elements (such as the positioning element 5-510) in theoptical element driving mechanism 5-1 in the Z direction to prevent theelements in the optical element driving mechanism 5-1 from falling out.For example, the limiting element 5-700 may be disposed between the case5-100 and the positioning element 5-510, which means the limitingelement 5-700 may be disposed between the positioning element 5-510 andthe fixed portion 5-F.

FIG. 12 and FIG. 13 are block diagrams of methods 5-900, 5-910 foroperating the optical element driving mechanism 5-1, and FIG. 14 to FIG.19 are schematic views of the optical element driving mechanism 5-1during operation.

When the optical element driving mechanism 5-1 is not operating, thelimiting portions 5-514 and 5-516 of the positioning element 5-510 maypass through the optical element 5-300 and in the notches 5-314 and5-312, respectively. In other words, the positing element 5-510 is in alocking position, and the optical element 5-300 cannot move freely onthe contact portions 5-230 (FIG. 5) of the base 5-200. For example, asshown in FIG. 15, when the optical element 5-300 is moved to the left byan external force, the limiting portions 5-514 and 5-516 may come intocontact with the sides of the notches 5-314 and 5-312, respectively, tolimit the movable range of the optical element 5-300. As a result, theoptical element 5-300 may be prevented from blocking the opening 5-202and the optical module 5-800 will allow light to pass through theopening 5-202 to the optical module 5-800. In some embodiments, if theoptical element 5-300 is moved to right, the stopping portion 5-330 ofthe optical element 5-300 may in contact with the protruding portion5-209 (not shown) of the base 5-200 to limit the position of the opticalelement 5-300.

The operation method 5-900 of the optical element driving mechanism 5-1includes an operation 5-902 for moving the positioning element 5-510 toan unlocking position, which corresponds to FIG. 16. In FIG. 16, thepositioning element 5-510 rotates to allow the limiting portions 5-514and 5-516 to be substantially arranged in the X direction, i.e. parallelto the extension direction of the passage 5-311. The width 5-W of thepassage 5-311 may be designed to be greater than the diameter 5-D1 ofthe limiting portion 5-514 and the diameter 5-D2 of the limiting portion5-516 to allow the limiting portion 5-514 and the limiting portion 5-516to pass through the passage 5-311. It should be noted that the opticalmodule 5-800 is still exposed from the opening 5-202.

It should be noted that the holder 5-600 may be fixed by the positioningelement 5-610 and the optical element 5-300, the first magnetic element5-410 may be disposed in the recess 5-620 of the holder 5-600, exposedfrom the opening 5-622, and arranged with the second magnetic element5-420 in the second direction (the Z direction), and the holder 5-600may be disposed between the optical element 5-300 and the first drivingassembly 5-400. As a result, the optical element 5-300 may be moved withthe first magnetic element 5-410. For example, the first magneticelement 5-410 may include magnet, and the second magnetic element 5-420and the third magnetic element 5-430 may be a coil and magneticpermeable material disposed in the coil. In other words, the secondmagnetic element 5-420 and the third magnetic element 5-430 may act asan electromagnet. As a result, current having different directions maybe provided to the second magnetic element 5-420 to control the positionof the first magnetic element 5-410 and the optical element 5-300.

Afterwards, the operation method 5-900 continues to an operation 5-904for moving the optical element 5-300 to a closed position, correspondingto FIG. 17. In FIG. 17, the optical element 5-300 moves to the left toallow the opening 5-202 and the optical module 5-800 disposed in theopening 5-202 to be covered by the optical element 5-300.

Afterwards, the operation method 5-900 continues to an operation 5-906for moving the positioning element 5-510 to a locking position,corresponding to FIG. 18. In FIG. 18, the stopping portions 5-514 and5-516 of the positioning element 5-510 may be positioned in the notches5-318 and 5-316, respectively, to limit the movement of the opticalelement 5-300. In other words, the positioning element 5-510 is at alocking position, and the optical element 5-300 cannot move freely onthe contact portion 5-230 (FIG. 5) of the base 5-200. For example, asshown in FIG. 19, when the optical element moves to the left by anexternal force, the limiting portions 5-514 and 5-516 may in contactwith the sides of the notches 5-318 and 5-316 to limit the movable rangeof the optical element 5-300. As a result, the optical module 5-800 maybe prevented from being exposed from the opening 5-202 to increasesecurity when the optical module is not in use.

The present disclosure also provides an operating method 5-910 of theoptical element driving mechanism 5-1. The operating method 5-910includes an operation 5-912 for moving the positioning element 5-510 toan unlocking position, which corresponds to FIG. 16. Afterwards, theoperation method 5-910 continues to an operation 5-914 for moving theoptical element 5-300 to a closed position, corresponding to FIG. 17.The details are similar to those of operations 5-902 and 5-904, and arenot repeated.

Afterwards, the operation method 5-910 continues to an operation 5-916for moving the optical element 5-300 to an open position, correspondingto FIG. 16, and an operation 5-918 for moving the positioning element5-510 to a locking position, corresponding to FIG. 15. In other words,during the operating method 5-910, the optical element 5-300 does notcontinuously cover the opening 5-202 and the optical module 5-800, andis turned back to the condition in FIG. 15 where the optical module5-800 is exposed from the optical element 5-300. As a result, theoptical element 5-300 may act as a shutter of the optical module 5-800,which means that it only covers the optical module 5-800 for a specificamount of time. Furthermore, when the optical element 5-300 is not inuse, moving the positioning element 5-510 to the locking position mayprevent the optical element 5-300 being moved by external forces.

In summary, an optical element driving mechanism is provided. Theoptical element driving mechanism includes a fixed portion, a movableportion, a first driving assembly, and a positioning element. Themovable portion is movably disposed on the fixed portion and comprisingan optical element, wherein the optical element moves in a firstdirection. The first driving assembly is at least partially disposed onthe fixed portion. The positioning element is rotatably disposed on thefixed portion or the movable portion, wherein when the first drivingassembly is not activated, the positioning element is used to limit theposition of the movable portion relative to the fixed portion to a limitposition. As a result, the optical module may be prevented from beingexposed from the opening to increase the security of the optical modulewhen the optical module is not in use, or the optical element drivingmechanism may act as a shutter of the optical module.

Although embodiments of the present disclosure and their advantages havebeen described in detail, it should be understood that various changes,substitutions and alterations can be made herein without departing fromthe spirit and scope of the disclosure as defined by the appendedclaims. Moreover, the scope of the present application is not intendedto be limited to the particular embodiments of the process, machine,manufacture, and composition of matter, means, methods and stepsdescribed in the specification. As one of ordinary skill in the art willreadily appreciate from the disclosure of the present disclosure,processes, machines, manufacture, compositions of matter, means,methods, or steps, presently existing or later to be developed, thatperform substantially the same function or achieve substantially thesame result as the corresponding embodiments described herein may beutilized according to the present disclosure. Accordingly, the appendedclaims are intended to include within their scope of such processes,machines, manufacture, and compositions of matter, means, methods, orsteps. In addition, each claim constitutes a separate embodiment, andthe combination of various claims and embodiments are within the scopeof the disclosure.

What is claimed is:
 1. An optical element driving mechanism, comprising:a fixed portion; a movable portion movably disposed on the fixed portionand comprising an optical element, wherein the optical element moves ina first direction; a first driving assembly at least partially disposedon the fixed portion; and a positioning element rotatably disposed onthe fixed portion or the movable portion, wherein when the first drivingassembly is not activated, the positioning element is used to limit theposition of the movable portion relative to the fixed portion to a limitposition.
 2. The optical element driving mechanism as claimed in claim1, further comprising a second driving assembly separated from the firstdriving assembly for a distance.
 3. The optical element drivingmechanism as claimed in claim 2, wherein the first driving assembly, thesecond driving assembly, and the positioning element are arranged in thefirst direction.
 4. The optical element driving mechanism as claimed inclaim 1, wherein the first driving assembly comprises a first magneticelement and a second magnetic element arranged in a second directionthat is perpendicular to the first direction.
 5. The optical elementdriving mechanism as claimed in claim 1, wherein the fixed portioncomprises a case and a base, the base is disposed on the base, and thecase comprises a connecting portion directly connected to the base. 6.The optical element driving mechanism as claimed in claim 5, wherein theconnecting portion is positioned between the first driving assembly andthe positioning element when viewed in a third direction that isperpendicular to the first direction.
 7. The optical element drivingmechanism as claimed in claim 5, further comprising a second drivingassembly, wherein the second driving assembly and the connecting portionat least partially overlap each other when viewed in a third directionthat is perpendicular to the first direction.
 8. The optical elementdriving mechanism as claimed in claim 1, wherein the positioning elementcomprises a main body and a stopping portion extending from the mainbody.
 9. The optical element driving mechanism as claimed in claim 1,further comprising a limiting element disposed between the positioningelement and the fixed portion.
 10. The optical element driving mechanismas claimed in claim 9, wherein the fixed portion comprises a case and abase, the case is disposed on the base, and the limiting element isdisposed between the case and the positioning element.
 11. The opticalelement driving mechanism as claimed in claim 1, further comprising anelectronic element disposed on the fixed portion, and the first drivingassembly is disposed between the electronic element and the positioningelement.
 12. The optical element driving mechanism as claimed in claim1, wherein the fixed portion has an opening for accommodating an opticalmodule.
 13. The optical element driving mechanism as claimed in claim12, wherein the opening at least partially overlaps the optical modulein a second direction that is perpendicular to the first direction. 14.The optical element driving mechanism as claimed in claim 1, furthercomprising a circuit electrically connected to the first drivingassembly, wherein the fixed portion has a recess, and the circuit isdisposed in the recess.
 15. The optical element driving mechanism asclaimed in claim 14, wherein the first driving assembly is positionedbetween the recess and the positioning element.
 16. The optical elementdriving mechanism as claimed in claim 1, further comprising a holderaffixed to the optical element and disposed between the optical elementand the first driving assembly.
 17. The optical element drivingmechanism as claimed in claim 16, wherein the first driving assemblycomprises a first magnetic element, the holder has a recess, and thefirst magnetic element is disposed in the recess.
 18. The opticalelement driving mechanism as claimed in claim 17, wherein the holder hasan opening, and the first magnetic element is exposed from the openingwhen viewed in a second direction that is perpendicular to the firstdirection.
 19. The optical element driving mechanism as claimed in claim1, wherein the positioning element further comprises a main body and twolimiting portions extending from the main body in the first direction,wherein the two limiting portions pass through the optical element. 20.The optical element driving mechanism as claimed in claim 19, whereinthe optical element has a passage, each of the limiting portions has acolumn-like shape, and the width of the passage is greater than thediameter of each of the limiting portions.